Renewable Toner Compatible MICR Toner Cartridge High Yield Replacement for HP 43X C8543X for use in Laserjet 9000 9040 9050 Lifetime Warranty. We always honor our warranty, even if the Amazon return window has closed. Contact us directly with any questions or issues. RT MICR Toner Cartridge with magnetic toner for check printing Replaces OEM part #: HP 43X C8543X High Yield Toner Cartridge High Yield: 30,000 standard pages; prints 90k checks @ 3 per page For use in HP LaserJet Printers: 9000 9000n 9000dn 9000hdn 9000hnf 9000hns 9000mfp 9000lmfp | 9040 9040n 9040dn 9040mfp | 9050 9050n 9050dn 9050mfp